how to fix the AC not blowing cold on my Ford F-150 Fourteenth Generation (2021-present)

Solution

1. Preparation

• Tools Required: OBD-II scanner, manifold gauge set, multimeter, socket set, replacement cabin air filter (if needed).
• Park the vehicle in a well-ventilated area and ensure the engine is off. Allow the engine to cool before proceeding. Disconnect the battery to avoid electrical shorts.

2. Check and Recharge Refrigerant

• Sub-steps:
  1. Connect the manifold gauge set to the AC service ports (high and low).
  2. Read the pressure levels. If low, proceed to recharge.
  3. Use a refrigerant canister to add refrigerant to the low-pressure side as per manufacturer specifications.
  4. Monitor the pressure gauge to reach the recommended level.

3. Inspect and Replace Cabin Air Filter

• Sub-steps:
  1. Locate the cabin air filter access panel (usually under the glove compartment).
  2. Remove the panel by unscrewing or unclipping it.
  3. Take out the old cabin air filter and replace it with a new one, ensuring it is oriented correctly.
  4. Reattach the access panel securely.

4. Verify AC Compressor Operation

• Sub-steps:
  1. Reconnect the battery.
  2. Start the engine and turn on the AC to the maximum setting.
  3. Use a multimeter to check for voltage at the AC compressor connector.
  4. If voltage is present but the compressor is not engaging, it may need to be replaced.